Home / 120,421.08-166,181.08-66,709.57

Finding the Fourth Proportional to 120,421.08, 166,181.08 and 66,709.57

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Solution

The fourth proportional to 120,421.08, 166,181.08 and 66,709.57 is: 92,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.08 : 166,181.08 = 66,709.57 : x
  2. Step 2: Convert to fraction form
    120,421.08/166,181.08 = 66,709.57/x
  3. Step 3: Cross multiply
    120,421.08x = 166,181.08 × 66,709.57
  4. Step 4: Simplify right side
    120,421.08x = 11,085,868,388.94
  5. Step 5: Solve for x
    x = 11,085,868,388.94/120,421.08
  6. Step 6: Final answer
    x = 92,059.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.